On 01/08/2020 11:57:24, newshound wrote:
On 31/07/2020 20:10, Fredxx wrote:
What's the best way?

The original sheet was cut by saw, but is there an alternative way for
cutting out a small sheet 3ft x 2ft?

Do you mean fibreboard? 12mm will cut with a Stanley knife.

Straight or curved cuts?

Straight cuts.

I did try a Stanley knife and while it scored the surface I wasn't
confident it wouldn't be "pinched" as the blade got deeper.

This is the stuff:

https://www.wickes.co.uk/STS-Constru...-12mm/p/225437